Abstract: The optical detector of a value of an atmospheric physical quantity representative of a danger includes: a measurement chamber accessible to the atmosphere; an electronics compartment for receiving electronics for detecting the value of the atmospheric physical quantity representative of a danger, the detecting electronics including electronic elements comprising at least: a light emitter, a light receiver that is sensitive to at least some of the wavelengths of the light rays emitted by the emitter, and electronics for processing detection signals, the detector in addition including: a first light guide facing the emitter in order to direct the light emitted by the emitter from the electronics compartment to a detecting zone in the measurement chamber; and a second light guide facing the receiver in order to direct light originating from said detecting zone to the electronics compartment in order to be received by the receiver, the amount of light received by the receiver being representative of the

Abstract: An alarm triggering device (200) for a security system (10), includes an interface (210) arranged so as to connect the alarm triggering device (200) to a central monitoring station (100) of the security system (10) via a wireless connection (50); elements (220) for triggering an alarm in the case of detection of a predetermined event; supply elements (230) for enabling the power supply of the alarm triggering system from a supply source; fault detection elements (240) for detecting an operating fault of the triggering device; and signaling elements (250) for signaling, to the alarm triggering device (200), the operating fault of the alarm triggering device (200).

Abstract: An alarm triggering device (200) for a security system (10), includes an interface (210) arranged so as to connect the alarm triggering device (200) to a device for managing the security system (100) via a wireless connection (50); triggering elements (220) for triggering an alarm in the case of a pre-determined event; elements for controlling the wireless connection (240) in order to check, during an alarm triggering device installation step, the quality of the wireless connection between the alarm triggering device and the management device; and signalling elements (250) for signaling, to the alarm triggering device, an indication of the quality of the wireless connection between the alarm triggering device and the management device during the alarm triggering device installation step.

Abstract: A smoke detector includes a drift chamber and an ionization chamber formed by a first electrode and a second electrode. Electric charges are generated by ionization of the air. The drift chamber separated from the ionization chamber by the second electrode. The smoke particles penetrates from the environment to a detector inside the drift chamber. The electrical potential of first electrode exceeds a critical electric potential value for generating a corona discharge in the vicinity of the first electrode. The second electrode has openings for the electric charges generated in the ionization chamber to move to the drift chamber. The electric potential of the second electrode allows the electric charges in the drift chamber to move from the second electrode to the third electrode. The electric field between the second and third electrodes is at least 100 times weaker than the electric field between the first and second electrodes.

Abstract: An extinguisher identifying device. The device comprises an extinguisher identifying device and an activation device, and a communications module. The extinguisher identifying device reads an identifying element on an extinguisher to obtain identifying data of the extinguisher. The activation device is configured to activate the extinguisher identifying device in response to a predetermined event. The communications module is configured to transmit the extinguisher identifying data to a management device.

Abstract: A smoke detector includes a drift chamber and an ionization chamber formed by a first electrode and a second electrode. Electric charges are generated by ionization of the air. The drift chamber separated from the ionization chamber by the second electrode. The smoke particles penetrates from the environment to a detector inside the drift chamber. The electrical potential of first electrode exceeds a critical electric potential value for generating a corona discharge in the vicinity of the first electrode. The second electrode has openings for the electric charges generated in the ionization chamber to move to the drift chamber. The electric potential of the second electrode allows the electric charges in the drift chamber to move from the second electrode to the third electrode. The electric field between the second and third electrodes is at least 100 times weaker than the electric field between the first and second electrodes.

Abstract: Thermally conductive polymer materials having thermally conductive charges and polymer network compositions characterized by the fact that the network is able to reorganize by exchange reactions that allow it to relax stresses and/or flow while maintaining network connectivity. As a result, the polymer network is characterized by its finite viscosity at elevated temperatures in spite of the crosslinking. These characteristics provide such materials remarkable properties for use as thermal interface and notably improved adhesion, self-repairing, in addition to greater processing flexibility, better mechanical properties, improved chemical resistance.

Abstract: The smoke detector comprises a housing provided with one or more openings for the passage of smoke particles into an interior of the housing. A first electrode and a second electrode are disposed in the interior of the housing and generate an electric field by application of an electrical potential therebetween. A detection chamber is defined between the first electrode and the second electrode, the detection chamber comprising an ionization zone for the generation of charged particles by ionization of air in the vicinity of the second electrode and a drift zone for the movement of charged particles towards the first electrode. A measurement device measures an electrical parameter representative of the electrical current generated between the first electrode and the second electrode by the charged particles.

Abstract: A method of acquisition by a mobile terminal (20) situated in proximity to a display panel (10), of complementary information related to at least one poster (11) present on the display panel (10), the method including the following steps: acquisition of the identification data (S1) making it possible to identify the display panel (10), transmission of the identification data (S2) to a processing service by way of a communication network; and reception, from the processing service, of the complementary information relating to the poster (11) presented on the display panel (10) identified by the processing service on the basis of the identification data.

Abstract: A nanoparticle includes a nanosheet coated partially or totally with at least one layer of inorganic material and its use as a fluorophore or a fluorescent agent.

Abstract: A device for detecting the presence of an automatic defibrillator. The device comprises a detector, a communications device and an activation device. The detector detects the presence of an automatic defibrillator in its operation position and to defibrillator relating to the automatic defibrillator. The communications device is configured to transmit he e data of the automatic defibrillator to a management device. The activation device is configured to activate at least one of the communication device and the detector in response to a pre-determined event.

Abstract: An extinguisher identifying device. The device comprises an extinguisher identifying device and an activation device, and a communications module. The extinguisher identifying device reads an identifying element on an extinguisher to obtain identifying data of the extinguisher. The activation device is configured to activate the extinguisher identifying device in response to a predetermined event. The communications module is configured to transmit the extinguisher identifying data to a management device.

Abstract: A fire extinguishing device for a security system comprises an extinguisher mount, an interface, a power supply, a working condition verifier, a signaling device. The extinguisher mount configured to support an extinguisher for putting out a fire. The interface configured to connect the fire extinguishing device to a security system control unit over a wireless connection. A power supply for supplying power to the fire extinguishing device. The working condition verifier for detecting an operating fault of the fire extinguishing device. The signaling device for signaling the operating fault of the fire extinguishing device at the location of the fire extinguishing device.

Abstract: An alarm triggering device (200) for a security system (10), includes an interface (210) arranged so as to connect the alarm triggering device (200) to a central monitoring station (100) of the security system (10) via a wireless connection (50); elements (220) for triggering an alarm in the case of detection of a pre-determined event; supply elements (230) for enabling the power supply of the alarm triggering system from a supply source; fault detection elements (240) for detecting an operating fault of the triggering device; and signaling elements (250) for signaling, to the alarm triggering device (200), the operating fault of the alarm triggering device (200).

Abstract: An alarm triggering device (200) for a security system (10), includes an interface (210) arranged so as to connect the alarm triggering device (200) to a device for managing the security system (100) via a wireless connection (50); triggering elements (220) for triggering an alarm in the case of a pre-determined event; elements for controlling the wireless connection (240) in order to check, during an alarm triggering device installation step, the quality of the wireless connection between the alarm triggering device and the management device; and signalling elements (250) for signaling, to the alarm triggering device, an indication of the quality of the wireless connection between the alarm triggering device and the management device during the alarm triggering device installation step.

Abstract: The smoke detector includes: a chamber (1) provided with apertures (3) allowing the smoke to enter a detection area (D), a light source (S) configured to emit towards the detection area (D), and a light receiver (R) configured so as to receive the light coming from the detection area (D). A concentration element (6, 7) is provided so as to create a non-uniform electric field in the detection area (D), that, in the presence of smoke, can polarize smoke particles entering the detection area (D). The non-uniform electric field has a spatial gradient configured to exert a dielectrophoretic force on the smoke particles so as to drive the polarized smoke particles into a concentration zone (C) in the detection area (D) and to aggregate them together to form quasi “big particles”.

Abstract: A method of acquisition by a mobile terminal (20) situated in proximity to a display panel (10), of complementary information related to at least one poster (11) present on the display panel (10), the method including the following steps: acquisition of the identification data (S1) making it possible to identify the display panel (10), transmission of the identification data (S2) to a processing service by way of a communication network; and reception, from the processing service, of the complementary information relating to the poster (11) presented on the display panel (10) identified by the processing service on the basis of the identification data.

Abstract: The smoke detector comprises a housing provided with one or more openings for the passage of smoke particles into an interior of the housing. A first electrode and a second electrode are disposed in the interior of the housing and generate an electric field by application of an electrical potential therebetween. A detection chamber is defined between the first electrode and the second electrode, the detection chamber comprising an ionisation zone for the generation of charged particles by ionisation of air in the vicinity of the second electrode and a drift zone for the movement of charged particles towards the first electrode. A measurement device measures an electrical parameter representative of the electrical current generated between the first electrode and the second electrode by the charged particles.

Abstract: To authenticate images taken by image capturing elements (3) of offending vehicles, for example, when exceeding the authorized speed, provided elements are provided for allowing informative data on the offence to be supplied, such as the speed of the vehicle, the date, the time and the place of the offence and various processing methods are provided which enable, during exploitation of the images, detection of whether or not manipulations have been carried out on the images.

Abstract: The invention concerns a method for transmitting in an area (100) information items in the form of sound waves representing a signal X(t), through a loudspeaker enclosure (2), said method comprising a step of setting up a public address system which consists in applying to the input of the loudspeaker enclosure (2) an electric signal P(t)=W(t) ?X(t) wherein is the convolution product and W(t)=S(?t)? I(t), wherein S(?t) is the temporal return of the pulse response S(t) between the enclosure and the target zone (101) belonging to the area to be fitted with a P.A. system (100) t representing time, and I(t) is the temporal response of the product e?2inft0.Sc (f), wherein f represents the frequency, t0 is a constant Sc(f)=1/(S1(f))?, ? being a non-null positive number and S1(f) being a real function obtained by peak clipping of the modulo I S(f) I of the frequency response S(f) of S(t).